bascule

About 0.04 uses per million words.

Meaning

1. noun A counterbalanced structure having one end that rises as the other lowers.
2. noun The portion of a breech-loading firearm that pivots open in order to allow access to the chamber.

Similar words

cecal boat lift balance weight moving staircase escalator balancing ramp boatlift seesaw riser

Often followed by

bridge bridges span and leaf or type spans is

Word family

bascules